William e



{No Model.)

W. E. DAVIS. Telegraph Relay and Sounder.

No. 233,214. Patented Oct. 12,1880.

Wi t'nesses:

UNITED STATES PATENT @FFICE.

WILLIAM E. DAVlS, OF JERSEY CITY, NEW JERSEY.

TELEGRAPH RELAY AND SOUNDER.

SPECIFICATION forming part of Letters Patent No. 233,214, dated October 12, 1880.

Application filed July 23, 1880.

To all whom t'tmay concern:

Be it known that 1, WILLIAM E. DAVIS, of Jersey City, in the county ot'Hudson and State of New Jersey, have invented a new and useful Improvement in Telegraph Relays and Sounders, oi which the following is a specification. I

In the drawings, Figure 1 is a plan or top view of my improved relay and sounder. Fig. 2 is'a side view of the relay, partly in section, on the line 00 x of Fig.1. Fig. 3 is a cross-section through the line 2 z of Fig. 1. Fig. A is a detached side view of a portion of the sounder.

My invention is of an improved form of the electro-magnet used in telegraph relays and Sounders, in which novel form the magnet is arranged to act as its own armature and without any separate armature.

My invention further consists in a new mechanism for efl'ectin g the proper adjustment of the magnet in both relay and sounder, rendered necessary by the varying strength of the line-currents.

The new form of sounder and method of adjustment are used in connection with my improved form of electro-magnet and are rendered possible by its use.

Referring to the drawings, A is the relay, and B is the sounder. The relay-magnet is formed of two magnet-spools, a and b, whose cores are wrapped with wire in one circuit, so that the current, after having passed through the spool a, will traverse the spool b, the wire at Fig. 1 showing the connection of -circuit. The spool (b is rigidly secured to a post, j, as in Fig. 2. From this post projects a soft-iron hoop or keeper, 0, which at its free end carries the spool 11, so as to bring the two poles d and e of the magnets a b opposite each other in two vertical planes, and near enough to be attracted when a current is passed through the magnets (t b, the elasticity of the keeper drawing the poles cl and e apart when the current ceases. Both spools a b are in bodily contact with the soft-iron keeper 0, whereby the magnet is completed.

The elastic keeper 0 is preferably adjusted by means of a screw, j, which operates, in connection with a brace or plate, g, to relax or tighten the keeper 0 and increase or decrease its elasticity, as may be desired.

(No model.)

The description so far given of the relaymagnet applies equally to the sounder-magnet, where the letters 0 and 0: represent the two spools, s the elastic keeper, t and u the poles of the magnet, and q the adjustingscrew of the keeper 8.

The relay-magnet A is provided with a horizonta-l metal or other conducting-post, h, fastened to the'vertical support j, which last is connected in the usual way, through the magnet of the sounder B, with the wire of the local battery.

Upon the keeper 0 of the relay-magnet, and in such manner as to be entirely insulated from it, is fastened the metal point i, which may be tipped with platinum, as may also be the post it at the pointp.

The point 2' is connected by the wire m, through the magnet of the sounder B, with the wire of the local battery. A screw, k, presses against the prolongation Z of the elastic keeper 0 in the relay-iustrumen t, and as it is tightened or loosened acts to regulate the distance apart of the poles cl and 0,- but in the sounder there is not such a screw represented, though such a screw may be there used for the same purpose and in the same manner as in the relay.

In the sounder the prolongation of the keeper s carries a striking-pin, 0, which travels or vibrates between two sounding-posts, n and a". (See Fig. 4.)

The motions of the pin 0 between the posts n 12* is so limited that the poles u and t of the magnet of the sounder B shall always be kept near enough together to be attracted when a current is passed through this magnet.

O and D are binding-screws adapted to hold the wires forming the line circuit, and connected with the relay-magnet A in the ordinary manner, so as to bring the relay-magnet into the line-circuit-that is to say, the linewire passes from post 0 to spool a, traversing the same, thence to spool b, traversing the same, thence to post D.

E and F are binding-screws adapted to hold the terminal wires running from the local battery to the sounder, and connected with the sounder-magnet B, so as to bring the soundermagnet into the local-battery circuitthat is to say, if the sounderis in the circuit of alocal battery, the wire passes from E to relay-post h,

and from point 1', through m, to spools v and r, and back to F, battery, or ground; but if the sounder is used in theline or main circuit and without a relay, the wire runs from E to r, thence to 'v, thence to F.

The operation of my improved relay is as follows: When the current is transmitted from the sending-station the poles (I and e of the relay-magnet are attracted and the movable spool b of the magnet is brought nearer the fixed spool to, the elastic keeper 0 allowing this and being also moved. This motion of the keeper 0 brings the metal point i in the local circuit into contact with thepoint p of the horizontal post h. The keeper 0 is so regulated by the screw and plate f g that any movement of the spoolb toward the spool a willcause a contact of the pointst' and 19, the point t' moving with the spool b. The contact of thepoints i and 1) closes the local-battery circuit already described, and as the current ofthe local batterypasses through the spools r a; the poles at and tof the soundermagnet B are attracted, the movable spool b is drawn toward the fixed spool a", drawing also in the same direction the elastic keepers, and causing the pin 0 to strike against the stop a and make a sound. When the line-current is broken the poles at and c of the relay-magnet A no longer attract one another, the clastic keeper 0 draws the spool b away from the spool a and breaks the local-battery connection by separating the points 19 and "L. The poles to and tof the sounder-magnet then cease to attract one another, the elastic keeper 8 of this magnet draws the spool o away from the spool 1", and the pin 0 recedes from stop at and strikes stop a" under the influence of the clastic keeper 8. In this way the signals made by the Morse key at the send-ingstation are transmitted so as to be exactly represented by the successive clicks of the pin 0 against the sounder-stops n and n, and are read in the familiar manner. The sounder, when used in the linewire, is, of course, operated as described.

The relay-instrument above described is virtually like the sounder, excepting in those particulars which always distinguish the one from the other. The relay requires the means for making and breaking the local circuit, and therefore has the parts It i, which are absent in sounder. The sounder has stops it and n and the pin 0, which are not in the relay.

I claim 1. The combination of the elastic keeper 0 with the fixed spool a and movable spool I), both spools being coiled with the same wire. and in line with each other to form an electromagnet and armature combined, substantially as described.

2. In'a telegraph-relay instrument, the com-' bination of the elastic keeper 0, fixed spool a, and movable spool b, insulated point i on keeper 0, and conducting-post h, for closing and opening the local circuit, substantially as and for the purposes described.

3. An electro-maguet having the two poles of its coiled spools opposite one another in two vertical planes and capable of approaching one another when the circuit is closed, substantially as specified.

et. The elastic keeper 0, screw f, and plate g, in combination with the electro-niagnet a b, substantially as described.

5. The combination, in a telegraph-sounder, B, of the stops it n elastic keeper 8, having striker 0, and magnet-spools a and b, substantially as and tor the purposes described.

6. In a telegraphic relay or sounder instrument, the electro-magnet, constructed of two spools that are attached to an elastic bar, 0, and placed in the same circuit, substantially as herein shown and described.

7. The postj, carrying the keeper 0, in combination with the spools a b and screw 70, substantially as herein shown and described- WILLIAM ED. DAVIS.

Witnesses:

WILLY G. E. SCHULTZ, WILLIAM H. 0. SMITH. 

